Stop using cardboard shims and upgrade to Trim-Tex Shim in a Box. Unlike paper-based shims, Trim-Tex shims are made from PVC and do not act as a food source for mold.
Restoration Millwork J-Pocket with Cut-out allows the cellular PVC trimboard to lie flush with siding around windows and doors with built-in nail flanges, allowing for more perfect miter cuts at the corners.
